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Патент USA US2112252

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March 29, 1938.
H. J. SANG
2,112,252
ADJUSTING INDICATING SYSTEM FOR MEASURING INSTRUMENTS
Fil'ed Jan. 7, 1937
INVENT_OR
HENRY J. SANG
BY
ATTORNEY
Patented Mar. '29,
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2412:2524
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ADJUSTING mmoA'rnvG srs'mmronf v
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>' Application January £1937, serialnogusnos‘ .j
(‘Granted
i . 12
under‘
claims.
theact
(chats-oi)
ofMarch s, 1883,--as
‘
"
‘ amended ADI?“ 30, 1928; 370 0. 7,57)
' This invention relates to means for ‘varying _ portion 2| and v an outwardly turned‘ portion 22 to
_ the sensitivity'of the indicator on a measuring" support the screw l6_on opposite sides of wheel
.device whereof the functioning depends upon - 2/3 that is ?xed to s'crew-i?-to turn the same, an
relative movement of two parts proportional to ' extension of the screw-being connected to pointer
24 on indicator 25'to rotate thepointer over the‘
It is theobject of myi'invention to provide ‘ indicator dial.~v The, driving connection between
means for varying the sensitivity of the indicator 'screw.,l6'and thepointer- 24 is ‘such that the
offmeasiiring devices of the‘ type above , men pointer makesfaacomplete rotation ‘over the dial
ihequantitytobe' measured.
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tion‘ed'and also to provide means for indicating offindicator 25vwhen the nut I9 is traversed from
the
load per‘ unit area, or ‘stress; when the; one I end‘ of- the threaded/portions! screw it ‘to [10 quantity
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to be measured is a load applied to ’_a -I ‘the otherh'i";
specimen being tested.
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The drawing ‘depicts a form'of "my-inventio'n
that has proved very satisfactory. '
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'1 T It. is apparentQthat ‘when the-‘relative positions
of_ the‘ limbslfand. 3a'are'fchangedrby application
'of a‘load to'the'iloopl?the arm II, and conse
While the present invention is shown and-dc? - quently lever. l2,'-:will‘be moved’with respect in .
scribed as associated with a loop dynamometer', I ‘ the bracket I3 and that the-extent of movement
'of that end-of lever |2 in-contact with red 9 ‘will
wish it to be understood that its'r?eld of-hseful
~ nessis not ‘restricted thereto but that it may be ‘ depend upon" the'p'osition oi thefulcrum formed
‘used in connection with any type of measuring‘, lby' knife edge 20; Iftheiknife edge 20 were diinstrument wherein there is relative movements " rectllyxin line ‘with the axis of rod _9 the moveof two parts proportional to~the'quantity to be’ 'ment imparted to the red by a change in the
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relative positions-of arm 'l-l a‘nd'bracket l3 would
jbe_t'ransmitted to the rod 9 without change,‘ it
measured.
Referring to _ the_ drawing.
"
the
'numeral
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I desig
nates a dynamo'meter; loop provided in its limbs 2 ~ being of course understood that the rod 9‘ is suit
‘and 3 with the holes land 5, respectively, for > ably biased to follow the lever 12 when the end
K; Cu applying the load to the loop. Fixed‘ to the limb
of the lever in contact with rod Sis moved in a _
2 is a member designated generally by the nu
meral’ 8 that comprises the dial 1 and a guide
sleeve 8 wherein is slideably mounted'the 'rocl
S'to cause‘index ill to move over dial 1. The op
30 erating connection between rod 9 andindex I0
direction away from the dial 1.
If the knife
edge 20 be set at a'position halfway betweenthe
“pivot of lever i2 and the axis of rod 9 the rod
will ‘be moved through twice the distance that
the pivot. moves with respect to bracket 13. and
if the position of the knife edge be such that
may be of any of the numerous types of devices
known and used for this purpose and since this ' :the ratio of the distance from the pivot cf lever
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forms no part of -my invention it has not been
illustrated in the drawing‘. The dial 1 is gradu
ated into any suitable number of divisions, which
number may for convenience in the ensuing dis-'
cussion be assumed as I00. Fixed to a sleeve Bis
an arm II that preferably extends parallel to the
limbs of the loop, having its end remote from the
sleeve 8 iatérallyturned, and to this laterally
turned portion is pivoted one'end of allever 12
whereof the other or free endis in contact with
the inner end of the rod 9.’
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Fixed to the limb 3 is a bracket l3, extending
l2 to the center of rod 9 is 10 times the distance 7.
from ‘the pivot to knife edge 28 then the rod will
be moved lotimesjas far as the relative-move
ment between the pivot and bracket l3. vIt will.
therefore, be seen‘ thatlthe dial of indicator 25
may be graduated to indicate the distance of Y
knife edge'20 from the pivot of lever i2 in terms
of a‘ fraction of the entire effective length of
lever l2, since the pointer 24 makes one rcvolu-_
tion for~ a complete traverse of the nut l9 along
screw
it.
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If we assume that the maximum load that may
parallel to arm ‘I I‘, provided with .apentured lugs
be safely applied to .the' loop is 2,000 pounds
l8, longitudinal movement of this screwbeing
will- represent‘20 pounds when there is-a one to
one. ratio of movement between the two ends of
I4 and IS in which is rotatably mounted a screw 1 then each of the ‘graduation divisions on dial 1
prevented by collars H and I8. The face of
lever l2 and that ifthe knife edge 20 be set
midway of ‘the effective length-of the lever l2
‘a travelling ‘nut I! provided on its opposite face - ‘then the relative movement between arm H and
with a knife edge 20 that contacts the face of bracket It! will be multiplied by two when it‘ is
lever 12 opposite the face thereof that contacts ‘ transmitted to rod 9, :index l0 will be moved
bracket l3 adjacent screw It has formed' in it a
channel 28 in which is‘slideable the ?at base of
rod 9.: The bracket I8 is formed with an offset . ‘twice as far for any given load as when the one I15
2.
2,112,252
to one ratio is used, and therefore a graduation
division on dial 1 will represent 10 pounds. Thus,
the index ill may be made to execute a complete
rotation over the dial 1 for any-applied load’
merely by adjusting the position of knife edge
20 and for small loads the sensitivity of the in
dication on dial 1 is increased in the same ratio
as the movement of index ID for a given load
is increased.
10
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' pivoted at. one end to said laterally turned por
tion and extending to contact the said end of
said rod whereby said index is actuated propor-_
tionally to movement of said lever, a bracket
?xed to said other limb on the line of the axis
of said rod and extending parallel to said arm,
a screw mounted in said bracket to permit ro
tation but not translation of said screw, a travel
-A further use may be made of my invention
in that it can be utilized for indicating the stress, _ ling nut on said screw having one'face in slide
or load per unit area of a specimen being tested, able contact with said bracket and on the oppo
and the indicator 25 may be calibrated in terms site face a knife edge contacting said lever, and
of area, within the limits of loading of any par
_ ticular loop.
That this is so will appear from a
consideration of the operation above set forth.
Let us assume, as heretofore, that the maximum
load that may be represented by a graduation
division on dial 1 is 20 pounds. It is apparent
that knife edge 20 may be so adjusted that each
graduation division on dial ‘I will represent 14
1.0
to said sleeve and having its other end portion
laterally turned toward the other limb, a lever
pounds and the pointer 24 will indicatea de?
nite position on indicator 25 when the knife edge
is set at the point corresponding to‘thisload
value of a division on dial 1. Assume that the
specimen under test has an area of 14 units
of area, then by setting the knife edge “at such
position that pointer 24 indicates 14 it is ap
parent that the indication of index III on dial ‘I
will be the load per unit area. That is, if index
l0 rotates to division 69 on dial 1 the total load
will be the number of divisions times the load
represented by each division, which is 69x 1,4,
but the stress is the total load divided by the
number of units of area to which the- load is
applied and this will be, in the example used.
69x14 divided by 14 which is simply ,69.
us.
by calibrating the dial of indicator 25 in terms
of the load represented by one division on dial
40 ‘I corresponding to the position of knife edge 20
as shown by pointer 24, the indicator '25 is-in
eil’ect calibrated in terms .of the .area. under test '
and the reading on‘ dial 1 will be the load per
an indicating device operatively connected ‘to
said screw to show the ratio of the distance be
tween the pivotof the-lever and the knife edge
to the distance between the pivot and the axis
of said rod.
2. Apparatus as described, comprising a‘ dy
namometer loop having two substantially parallel
limbs, a member including a graduated dial and
a guide sleeve disposed between said limbsand
?xed to one thereof, an index mounted to be‘
rotatable over said dial, means connected to said
index to rotate the same including a rod slide
able in said sleeve and extending beyond the in
ner end of said sleeve, an arm ?xed at one end
to said sleeve and having its other end portion
laterally turned toward the other limb, a lever
pivoted at one end to said laterally turned por 30
tion and extending to contact the said end of
said rod whereby said index is actuated propor
tionally to movement of said lever, a bracket
?xed to said other limb extending parallel to
said arm, a member having a ‘knife edge in con 35
tact with the face of said lever opposite said
rod slideably mounted’ on said bracket, means .to
move said member uniformly along said bracket,
and means operated by said means to indicate the
proportion of the effective length of 'said lever
lying between said knife edge and the pivot of said
lever.
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3. Apparatus as‘ldescribedp comprising a dy
unit area.
namometer loop having two substantially parallel
It is apparent :from the foregoing description
that theinvention can accomplish the division of
one quantity by another quantity, the quotient
limbs, a member including a graduated dial and 45
being indicated on the dial'l. In'the embodi
ment used for the purpose of illustratiomthe
dividend was expressed in ‘units of load, the
divisor in units of area, and the quotient in units.
aguide sleeve disposed between said limbs and
?xed to one thereof, an index mounted to be
rotatable over said dial,v means connected to
said index to rotate the same including a rod
slideable in said sleeve and extending beyond
the inner end of said sleeve, an arm fixed at
of load divided by area, that isto say, stress. - one end to said sleeve and having its other end
If, therefore, the invention described herein‘
portion laterally turned toward the other limb,
a lever pivoted at one end to said laterally
movement between parts 2 and 3 is caused to turned portion and extending to contact the said
change proportionally to one set of units, and , end of said rod wherebysaid index is actuated
the screw i8 is caused ,to move proportionally to proportionally to movement of said lever, a brack~
another set of units, then the dial 1 may be et ?xed to said other limb on the line of the
calibrated to read in terms of the ?rst named axis of said rod and extending parallel to ‘said
arm, the pivot of said lever and said bracket be 60~
units divided by the last named units.
The invention herein described and claimed ing relatively movable by load applied to said
may be used and/or manufactured by or for the loop, means carried by said bracket to cooperGovernment of the United States of America ate with said lever to cause the free end of said
for governmental purposes‘ without the payment lever to execute movement having ‘any desired
be set up in such a manner that the relative
of any royalties thereon or therefor.
I claim:
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I
ratio to the absolute value of any relative move
ment between said pivot and said bracket, and
1. Apparatus as described, comprising a dy
means operatively associated with the said means
namometer loop having- two substantially parallel
to indicate the said ratio.
4. Apparatus as described, comprising a ,dy
limbs, a member including a graduated dial and
a guide sleeve disposed between said limbs and
fixed to one thereof, an index mounted to be
rotatable over said dial, means connected to
said index to rotate the same including .a rod
vslideable in said sleeve and extending beyond the
inner end of said sleeve, an arm fixed at one end
namometer loop having two substantially parallel
limbs, a member including a graduated dial and
a guide sleeve disposed between said limbs and
?xed to one thereof, the maximum value of the
load representable by a graduation division on
said dial being ?xed by the characteristics of said
3
2,112,252
1
8. Apparatus as described, comprising. an ele
ment having two portions relatively movable
proportionally to the load applied thereto, indi
loop, an index mounted to be rotatable over said
dial, means connected to said index to rotate the
same including a rod slideable in said sleeve and ,
extending beyond the inner end thereof, an arm
?xed at one end to said sleeve and having its
eating means ?xed to one of said portions, means to actuate said indicating means proportionallyv
other end laterally turned toward the other limb,v
a lever pivoted at one end to said laterally turned
portion and extending to contact‘said e of said
rod whereby said index is actuated prcpor ionally
to relative movement between said portions, said
actuating means including adjustable elements
to ‘modify by a predetermined proportionality
10 to. movement of said lever, a member having a
knife edge in contact with the sidé of said lever
opposite said rod, means to move said member
along said lever parallel 'to- said arm, and means
factorrthe, actuation of said indicating means
due to relative movement of any given magnitude
between said portions, and means to indicate
10
the units of load represented by a unit, actua— v _
tion of said“ indicating means.
9. Apparatus as described, comprising an ele
ment having two portions relatively movable pro.
indicate the fraction of said maximum load rep-v portionally to the load applied thereto, a brackresented by a graduation division on said dial et secured to one of said portions, a fulcrum ele
corresponding to the position at which said knife ment slideably mounted on said bracket, load in- ,
dlcating means associated with the other of said
5. Apparatus as described, comprising an ele
portions, and means likewise associated with 20
ment having two portions relatively movable pro
said other portion and also with said fulcrum to
portionally to the load applied thereto, a bracket actuate said indicating means in response to rel
operated by said means to moveksaid member to
edge is set.
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secured to one of said portions,-a fulcrum ele
ment slidably mounted on said bracket, a mem
ative movement between said portions, such’ ac- ‘ '
tuation being modi?ed by a proportionality fac
ber including a guide sleeve -_fixed to the other‘ tor dependent upon the position of said fulcrum.
25 of said portions and lying between the' said two
.10.‘ Apparatus as described, comprising an ele
portions, a graduated dial on said member, an ment having two portions relatively movable pro
index mounted to rotate over said dial, means to. portionally to the load applied thereto, a bracket.
actuate said index including a rod' in said sleeve, secured to one of said portions, a-fulcrum ele
a support ?xed to said member to extend parallel ment slidably mounted on said bracket, load. in 30
30 to said bracket, a lever pivoted at one end to
dicating meansa/ssociated with the other of said
contact with the end of said rod, the face of said
portions, and means associated with said fulcrum
to indicate the units of load represented by unit
said support and having its other end portion in
lever opposite said rod.being in contact with said
fulcrum,,means to move said fulcrum along said;
35 bracket, and indicating meansv actuated by the
last mentioned. means to show ‘the units of load
_ represented by a graduation division on said dial
actuation of the load indicating means for each .
setting of said fulcrum.
.
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11. Apparatus as described, having two por
tions, relatively movable with respect to each
other along a predetermined line, indicating
corresponding to any position at which said . means ?xed to one of said portions, means asso
fulcrum is set.
ciated with said indicating means and with the
6. Apparatus as described, comprising an ele
other of said portions to actuate said indicating
ment having two portions relatively movable pro
means proportionally to relative movement be
portionally to the load applied thereto, a bracket tween said portions, sald associated means in
secured to one of said portions, a fulcrum element ' eluding adjustable elements to modify by a, pro
slidably mounted on said bracket, a member in
portionality factor the actuation of said indicat
45 cluding a guide sleeve ?xed‘ to the other of said ing means due to relative movement of any given
portions and-lying between the said two portions,.
a graduated dial on said member, an index
mounted to rotate over said dial, means to actu
ate said index including a rod in said sleeve, and
50 means to transmit to said rod any relative move
ment between said portions modi?ed by a pro-_
portionality factor that is dependent upon the po
sition of said‘ fulcrum.
7. Apparatus as described, comprising an ele
55 ment having two portions relatively movable pro
portionally to the load applied thereto, indicat
ing means ?xed to one of said portions, means to
actuate said‘indicating means proportionally‘ to
60
65
relativemovement between said portions, said ac
tuating means including adjustable elements to
modify by a predetermined proportionality fac
tor the actuation of said indicating means due
to relative movement of any given‘ magnitude
betwen said portions, and means to indicate the
value of said proportionality’ factor.
magnitude between said portions, said propor
tionality factor being dependent upon the posl-_
tion of said adjustable elements.
I
12. Apparatus as despribed, having two por
tions relatively movable with respect to each
other, along a predetermined line, a bracket se
curedto one of said portions, a fulcrum element
slidably mounted on said bracket, a member in
'. eluding a guide sleeve fixed to the other of said 55
portions and lying betwen the two said portions,
a graduated dial on said member, an
7
index‘
mounted to rotate over said dial, means to ac
tuate said index, including a‘ rod in said sleeve,
and means to transmit to said rod any relative
movement between said portions modified by a
proportionality factor that is dependent upon the
position of said fulcrum.
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‘HENRY J. BANG.
»
CERTIFICATE OF. CORRECTION.
‘ PatenfNo. 2,112,252.
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2
March 29,
J. SANG,’
1958.
‘
It is hereby certified that error appears in the above numbered patent
requiring correction as follows: In' the grant, and in the heading to the
drawing ‘ and specification, title of invention, for the word "Adjusting"
read Adjustable; Y‘ and that the said Letters Patent should be read with this
correction therein that the same may conforni to the record of the case‘ in
the
Patent
Office:
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sighed and sealed this 10th day of my, A. D. 1958.
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(Seal)
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Henry Van Arsdale,
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Acting Commissioner of Patents.
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